Polisher and grinder for wood and metal manufacturers



I B. ZSARNAY.

POLISHER AND GRINDER FOR WOOD AND METAL MANUFACTURERS. APPLICATION'FILED MAR 26, 1920.

1, 388,231. Patented Aug. 23, 1921.

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B. ZSARNAY. POLISHER AND GRINDER FOR WOOD AND METAL MANUFACTURERS.

APPLICATKON FILED MAR. 26. I920. 1,388,231. Patented Aug. 23, 1921.

2 SHEETSSHEET 2.

52 v ll i 2 57 4 g ATTORNEY.

UNITED STATES PATENT OFFICE.

BE A ZSARNAY, or

' f HAM LEWIS,

BIELLEVILLE, NEW JERSEY, ASSIGNOR OF ONE- HALF TO ABRA- OF NEWARK, NEW JERSEY.

POLISHER AND GRINDER FOR WOOD AND METAL MANUFACTURERS.

To all whomi tmag concem: I Beit known that I, BELA ZSARNAY, citizen of the United States, and resident of Belleville, in the county of Essex and State This invention relates to. polishing and.

abrading machines and has for its ob ect the provision of a compact and readily accessible andadjustable machine of this type.

For theaccomplishment of the above and otherobjects, I employ the mechanism shown in itsprefer-red form in the .accompanying drawings,in which,

Figure 1 .is a front view and partial section, on line 1-1.of Fig. 2, of the major part of, my machine. Fig. 2 is an end view showing the bar polishing and .forwarding mechanism. 3 is asection on line 8-8 of Fig. 1. 1

In the practical embodiment of my invention, pulley 1 on shaft 2, which is supported bywhangers 3, is driven from a source 0 powernot shown and rotates said shaft 2 and the pulleys mounted thereon through which-the various 1 mechanisms of my machine are driven.

A table 4, suitably supported on legs 5, has mounted thereon at one end, frames 6, 7, 9, and 10 (Figs; 1, 2, and 3) which inclose mechanism for grinding and polishing both sides of the work as 98 and for forwarding said work through the polishing means. top cover 8, having opening 11 for allowing the insertion of work into the machine, is suitably fastened over said frames for completely inclosing said mechanism. Two of such mechanisms are shown, both exactly alike except that they are reversed end for end with respect to each other, (Fig. 2) the rear end of one being placed in juxtaposition to the front end of the other, so that a description of one will suffice for both. Pulley 12 on shaft 2 drives pulley 13 of one of said mechanisms through belt 15, while pulley 14 on shaft 2 drives a similar pulley 13 on the other of said mechanisms through belt 16. Gear wheel 17 is mounted on the same shaft 18 on which pulley 13 is mounted and meshes with gear 19 on shaft 20. A second gear 100 is removably mounted on shaft 20, for allowing a gear of different size to be mounted on said shaft, whereby Specification of Letters Patent.

Application filed March 26,

Patented Aug, 23, .1921. 1920. Serial n. were.

of rotation of the entire mecha-' be charged for fast or the speed nism may readily slow grinding. A stud 21 supported from 7 frame '7, has loosely mounted thereon for easy removal therefrom when changes in speed are desired, gear wheel 22 for engag ing gear'wheel 100, crank disk. 23 being securedto said wheel 22'.- Connecting rod 24 attached at pin 25 to disk 23' is secured at its upper'end'at crank pin26 to cran disk 27 mounted on shaft 28. A pulley 29 on said shaft 28 drives pulley 30 on shaft 31 through belt 32, while pulley 33 at the end of shaft 28 opposite to that on which pulley 29 is mounted, drives'pulley 34 on shaft 35 through belt 36. 'Similarly,pulley 37 on shaft 38 is driven by pulley 39 on shaft 20 by means of belt 40,"a cylindrical roll 41 covered with polishing or abrading material such as glass, sand, flint, emery or the like, being mounted on said shaft 38, said grinding or polishing material being comparatively coarse. j

A similar roll 42 is mounted on'shaft 28, while-rolls 43 and 44 aremounted on shafts 18 and 31respectively, and are covered with material more finely divided than that on rolls 41and 42'. Rolls 45 and 4 6" on shafts 20 and 36 respectively are covered with leather or other durable polishing material for giving the final finish to the work. For adjusting the distance between the vertical sets of rolls to take work of different thicknesses, shafts 28, 31 and 36 carrying the outer sets of rolls, are mounted in a movable frame having a body portion 52 and two projecting flanges 53 or supporting said shafts near the ends thereof, suitable slots 54 in frames 6 and 7 being provided to allow movement of the ends of said shafts in said frames during adjustment.

Guide rods. 50 are supported in frames 9 I Block 55 is suitably guided on table 4 and is reciprocated by a link 57 connected to a these screws having flanges 65 of sufficient diameter to overlap the edges of the slot. The belt 66 is indicated as looped over pulleys 67 and 70, the latter of which is fixed on shaft 2, pulley 68 being fixed on a shaft 68 journaled in bearings 69 on the table 4.

Suitable provision maybe made for the removal of the dust formed by the polishing process. A pair of ducts 94 having intake openings therein positioned under suitable openings in table 4 are here shown, these ducts communicating with any suitable suction device. I

The operation of my improved machine is as follows:

Screws 47 being turned by means of the wing screw heads '48 sufficiently to make the space between one of the vertical sets of rolls 41, 43 and 45 and the adjustable set of rolls 42, 44, and 46, equal to the thickness of the finished work, pulley l is rotated, imparting motion to all of the various submechanism of my machine. It will be noted that by means of the peculiar connections hereinbefore described, all of said rolls will be rotated in the same direction. Thesizes of the various pulleys are such, however, that one set of rolls rotates somewhat faster than the otherset, so that the tendency of the rollsis toradually forward any work as 98, inserted 51I9l1gh opening 8 in between said rolls, downwardly, through a suitable opening in table 4, without much effort on it being obvious 1. In a polishing machine, a set of revoluble rolls adapted to engage one side of the Work, a second set of revoluble rolls spaced from said first set and adapted to engage-the opposite side of the Work, a movable frame carrying said second set of rolls, rods on which said frame is slidably mounted, springs on said rods for pressing said second set away from said first set of rolls, and screws for moving said frame toward said first set of rolls. I r 2. In a polishing machine, a set of revoluble rolls adapted to engage one side of the work, a second'set of revoluble rolls spaced from said first set and adapted to engage the opposite side of the work, a movable frame carrying said second set of rolls, rods on which said frame is mounted,'springs on said rods for pressing said second set away from said first set of rolls, screws for moving said frame, and means for rotatlngsa d set of rolls in the same directionan'd for rotating one set of said rolls faster than'the other set.

Signed at Belleville, in'the county of Essex and State of New Jersey, this second day of March, A. D. 1920. I 1

BELA, zsARN Y; 

